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Accumulation of unfolded proteins in the endoplasmic reticulum (ER) activates homeostatic responses collectively termed the unfolded protein response. Among the three principal signaling pathways operating in mammals, activating transcription factor (ATF)6alpha plays a pivotal role in transcriptional induction of ER-localized molecular chaperones and… (More)
Tunicamycin (Tm) was injected into ATF6a +/+ and-/-mice as in Fig. 1A. Albumin levels in serum were determined at the indicated time points after injection and are presented as the means + SEM (n=4).
The eukaryotic translation initiation factor 2α (eIF2α) phosphorylation-dependent integrated stress response (ISR), a component of the unfolded protein response, has long been known to regulate intermediary metabolism, but the details are poorly worked out. We report that profiling of mRNAs of transgenic mice harboring a ligand-activated skeletal… (More)